Thermal and Electronic Properties of Rare Earth Compounds at High Pressure

Uwatoko, Yoshiya; Ohashi, M.; Nakano, Tatsuya; Oomi, G.

doi:10.1016/b978-0-444-54316-5.00001-6

Cited by 12 publications

(6 citation statements)

References 251 publications

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“…The transverse magnetostriction coefficient λ ⊥ = (∆l/l) ⊥ denotes the change in the length of the magnetic sample perpendicular to the applied magnetic field. These parameters are used to define the anisotropic magnetostriction λ τ [27,28]:…”

Section: Magnetostrictive Properties Of the Sensormentioning

confidence: 99%

Testing and modeling of constant magnetic field cylindrical magnetoelectric sensors output characteristics

Kuczynski,

Bilski,

Bilski

et al. 2023

Bulletin of the Polish Academy of Sciences Technical Sciences

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The paper presents the novel concept of the magnetoelectric sensor constructed using the amorphous glass ribbon. Its output characteristics (voltage pattern), conditions of work and experimental results are presented. The novel construction allows for minimizing the demagnetizing field in the core of the sensor and linearization of the characteristics between the magnetic field and obtained voltage. Conducted experiments were aimed at determining the sensor operation in the presence of the constant magnetic field (H DC ). The main concern of the tests was to verify the linear dependency between the H DC value and the amplitude of the output voltage. Next, the computer model representing the sensor behavior in the constant magnetic field is described. The model implements the parameter identification task based on the regression algorithms. The presented work shows that the proposed device can be used to measure the weak magnetic field and the dependency between the output signal amplitudes and the constant component in the measured magnetic field is approximately linear. This enables measurements of even weak fields.

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Section: Magnetostrictive Properties Of the Sensormentioning

confidence: 99%

Testing and modeling of constant magnetic field cylindrical magnetoelectric sensors output characteristics

Kuczynski,

Bilski,

Bilski

et al. 2023

Bulletin of the Polish Academy of Sciences Technical Sciences

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“…Although the deviation tends to increase with the decrease in temperature, such behavior is a result of various factors such as the temperature dependence of the gauge factor, the sample dependence on the effect of domains in a ferromagnetic sample, the direction of strain in a single crystal, and the difference in K −1 , which is an acceptable error range in the measurement of thermal expansion by a strain gauge method. 1) In the future, we plan to reduce the error by correcting the gauge factor at low temperature. 19) Note that the dispersion of the measured data when using the new detector is much smaller than that when using the existing detector.…”

Section: Performancementioning

confidence: 99%

“…The deviation between the two results is approximately ±1 × 10 −4 K −1 , which is an acceptable error range in the measurement of thermal expansion by a strain gauge method. 1) In the future, we plan to reduce the error by correcting the gauge factor at low temperature. 19) Note that the dispersion of the measured data when using the new detector is much smaller than that when using the existing detector.…”

Section: Linear Thermal Expansion Of Tbalmentioning

confidence: 99%

“…Previously, we measured thermal expansion and magnetostriction for a wide array of materials such as heavy fermions and superconductors. [1][2][3][4][5][6][7] To perform these measurements, the sample must be mounted in an apparatus that can control the specimen conditions such as the temperature and magnetic field. On the other hand, it is well known that a commercial physical property measurement system (PPMS; Quantum Design) is a useful apparatus for the generation of extreme conditions and has been used in our previous measurements of physical properties such as electrical resistance and heat capacity for a variety of materials.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

New bridge-circuit-type detector to measure precise resistance change of strain gauge at low temperature and magnetic field

Ohashi

Kishii

Tateno

2016

Jpn. J. Appl. Phys.

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We report a new highly accurate and versatile bridge-circuit-type detector that has a simple structure and demonstrates a low degree of error for measurements of thermal expansion and magnetostriction by the strain gauge method. As an example, a commercial physical property measurement system (PPMS) is combined with a compact bridge-circuit box. Thermal expansion and magnetostriction are calculated from the resistance of the bridge and bridge voltage, measured by the operation of a standard PPMS resistivity option. The performance of the new detector is demonstrated by measuring the temperature and magnetic field dependences of the strain to obtain the thermal expansion coefficient and magnetostriction of the single crystals of rare-earth compounds RAl 2 (R = Dy, Tb).

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“…The MCE is the essential result of the magnetic entropy change due to the coupling of a magnetic spin system with magnetic field, and it is significant around the magnetic phase transition. Despite it has been well recognized that the magnetic phase transitions can be tuned by pressure 9 10 11 , only a few works are related to the hydrostatic pressure effect on MCE 12 13 14 15 16 17 . Morellon et al 12 .…”

mentioning

confidence: 99%

Hydrostatic pressure effect on magnetic phase transition and magnetocaloric effect of metamagnetic TmZn compound

et al. 2017

Sci Rep

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The magnetocaloric effect (MCE) is an intrinsic thermal response of all magnetic solids which has a direct and strong correlation with the corresponding magnetic phase transition. It has been well recognized that the magnetic phase transition can be tuned by adjusting applied pressure. Therefore, we perform the high hydrostatic pressure magnetization measurements (up to 1.4 GPa) on a recently reported giant MCE material of TmZn. The results indicate that the Curie temperature of TC increases from 8.4 K at the ambient pressure to 11.5 K under the pressure of 1.4 GPa. The field-induced first order metamagnetic transition is getting weak with increasing pressure, which results in a reduction of MCE. The hydrostatic pressure effect on the magnetic phase transition and MCE in the metamagnetic TmZn is discussed.

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Thermal and Electronic Properties of Rare Earth Compounds at High Pressure

Cited by 12 publications

References 251 publications

Testing and modeling of constant magnetic field cylindrical magnetoelectric sensors output characteristics

Testing and modeling of constant magnetic field cylindrical magnetoelectric sensors output characteristics

New bridge-circuit-type detector to measure precise resistance change of strain gauge at low temperature and magnetic field

Hydrostatic pressure effect on magnetic phase transition and magnetocaloric effect of metamagnetic TmZn compound

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